题目内容
— I saw Mr Li at the meeting yesterday.
— Did you? He _______ have attended it, for he had asked for sick leave.
— Did you? He _______ have attended it, for he had asked for sick leave.
| A．needn’t | B．couldn’t | C．shouldn’t | D．mustn’t |
B
试题分析：考查情态动词用法。Needn’t have done本不需要做某事，实际上却做了。Couldn’ t have done不可能做了某事；shouldn’t have done 本不应该做某事，实际上却做了；句意：—昨天在会议上我看见了李先生。—是吗？他不可能从句会议的，因为他已经请了病假了。故B正确。
点评：Needn’t have done本不需要做某事，实际上却做了。Couldn’ t have done不可能做了某事；shouldn’t have done 本不应该做某事，实际上却做了；
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